- For use in Class 1 remote-control and signal circuits in accordance with NEC Article 725- Recognized for use in Class I, II, and III, Divisions 1 and 2; or Class I, Zones 1 and 2 hazardous locations per NEC articles 501, 502, 503 and 505.- Installed indoors or outdoors, in wet or dry locations, in a raceway, as aerial cable on a messenger, in cable trays , or for direct burial - Recognized for use on fixed or floating offshore petroleum facilities as recommended by American Petroleum Institute.